China Telecom has reportedly listed an as-yet unreleased new OPPO phone on its website. It is apparently to be called the A72 5G, and has an SoC represented by an unfamiliar MediaTek model number. According to some other leaks, however, it may also be a Reno 10X Zoom successor.
https://www.notebookcheck.net/The-OPPO-A72-5G-may-be-the-first-phone-to-launch-with-a-mysterious-new-MediaTek-processor.481446.0.html
Perhaps, Oppo might be launching this smartphone with some upcoming Mediatek chipset which might not have been announced till now.